Because HBr is a strong acid, it dissociates almost completely in water. That means the concentration of H+ is very nearly equal to that of HBr. What is [H+] if [HBr] is 0.01 M?

The pH of a solution is equal to the negative log of H+ concentration: pH = –log[H+]
What is the pH of this solution? (Use the “log” button on your calculator.)

What is the pH of a 0.6 M HBr solution?

the ozone layer acts as a filter for the shorter wavelength and highly hazardous ultraviolet radiation (uvr) from the sun, protecting life on earth from its potentially harmful effects. when the sky is clear, there is an inverse relationship between stratospheric ozone and solar uvr measured at the earth's surface.

the answer to your question is c

b. accuracy of the data matters alot more than its number of digits, organization or amount of detail. quantitative observation is more accepted than the qualitative observation.